Implant for electrolysis of aqueous humor
View Patent ↗An implant and method for regulating the intraocular pressure of an eye is described. The implant is disposed in Schlemm's canal of an eye through ab-externo or ab-interno canaloplasty. Once inserted, the implant monitors the intraocular pressure of an eye with a pressure sensor and provides regulated current to electrodes within the implant to perform electrolysis. Electrolysis causes a release of gas from the eye and a reduction in the volume of aqueous humor to decrease intraocular pressure. The degree of electrolysis and reduction of intraocular pressure is regulated by a platform that includes monitoring by a pressure sensor, safety controls, and remote access.
1. An apparatus comprising:
an ocular implant with a curved longitudinal central axis with a bend in a curvature plane, the ocular implant including a central channel and an array of perforations along walls of the ocular implant, the ocular implant configured to be disposed within Schlemm's canal of an eye;
a pair of electrodes lining an inside of the walls of the ocular implant;
a controller within the ocular implant electrically connected to the pair of the electrodes; and
a power source within the ocular implant electrically connected to the controller.
2. The apparatus of claim 1 wherein the power source delivers electrical current to the electrodes.
3. The apparatus of claim 1 wherein the electrodes are arranged in a coil within the ocular implant.
4. The apparatus of claim 1 further comprising a pressure sensor electrically connecting to the controller, the pressure sensor configured to detect pressure within the ocular implant.
5. The apparatus of claim 1 further comprising an antenna electrically connected to the controller, said antenna configured to wirelessly communicate with a remote receiver.
6. The apparatus of claim 1 where the electrodes are made of titanium.
7. The apparatus of claim 1 where the ocular implant is made of polyurethane.
8. The apparatus of claim 1 further comprising a lumen at an end of the ocular implant, the lumen configured to receive aqueous humor from the eye.
9. A method comprising:
performing a fornix-based conjunctival peritomy;
creating a scleral flap beneath a conjunctiva in a region of the fornix-based conjunctival peritomy;
exposing Schlemm's canal;
inserting a proximal end of a ocular implant into an incision into the Schlemm's canal, where the ocular implant includes a central channel and an array of perforations along walls of the ocular implant, a pair of electrodes lining an inside of the walls of the ocular implant, a controller within the ocular implant electrically connected to the pair of the electrodes, and a power source within the ocular implant electrically connected to the controller;
suturing the scleral flap; and
performing electrolysis by energizing the electrodes with a signal from the controller.
10. The method of claim 9 where the signal from the controller is a current that is delivered by the power source to the electrodes.
11. The method of claim 9 where the controller uses the signal to perform the electrolysis by regulating a level of current, a duration of the current, and a timing of the current.
12. The method of claim 9 where the perforations in the walls allow ingress of aqueous humor into the central channel of the ocular implant.
13. The method of claim 9 where the perforations in the walls allow egress of gas from the central channel of the ocular implant.
14. The method of claim 9 where the electrodes are made of platinum.
15. The method of claim 9 where the electrodes are made of graphite.
16. A method comprising:
receiving a signal from a remote device at a controller in an ocular implant, where the ocular implant is located in Schlemm's canal of an eye, where the ocular implant includes a central channel and an array of perforations along walls of the ocular implant, a pair of electrodes lining an inside of the walls of the ocular implant, the controller electrically connected to the pair of the electrodes, a pressure sensor electrically connecting to the controller, and a power source within the ocular implant electrically connected to the controller;
detecting a pressure within the ocular implant with the pressure sensor;
analyzing the pressure with the controller and determining if electrolysis is required to reduce the pressure;
energizing the electrodes by asserting power on a signal from the controller;
monitoring the pressure with the pressure sensor until the pressure indicates that the electrolysis is no longer required; and
de-energizing the electrodes by de-asserting power on the signal from the controller.
17. The method of claim 16 where the signal from the controller triggers a relay to deliver current from the power source to the electrodes.
18. The method of claim 16 where the perforations in the walls allow ingress of aqueous humor into the central channel of the ocular implant.
19. The method of claim 16 where the perforations in the walls allow egress of gas from the central channel of the ocular implant.
20. The method of claim 16 where the ocular implant is made of silicone.